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Life - Surveying the Solar System (3:53)
The first extra planetary probes report that our closest neighbors are desolate places.
The Mountains of Mars (2:27)
Scientists determine the mountains on Mars did not form by plate tectonics.
Tank on the Moon: Taking Flight (1:49)
The U.S. accomplishes its mission of having men walk on the moon and the Soviet Union is left waiting in the wings. Learn more about NASA and the space race in this video.
The Planets: The Sun and Solar Flares (1:13)
Following the discovery of solar prominences by Skylab, we now know that the most violent solar episodes are the immense Coronal Mass Ejections.
Tank on the Moon: Improving the Lunokhod (2:59)
With the basic design completed, scientists work to improve the Lunokhod for further testing. Learn more about lunar exploration in this video.
